The Heart Rate during a Simple Exercise.

@article{Knox1940TheHR,
  title={The Heart Rate during a Simple Exercise.},
  author={J C Knox},
  journal={British heart journal},
  year={1940},
  volume={2 4},
  pages={289-97}
}
  • J C Knox
  • Published 1940 in British heart journal
Simple exercise tolerance tests, such as stepping on and off a stool a given number of times and noting the effect on the pulse rate, have long been used in medical practice. Almost invariably, however, the pulse rate is taken before and after, owing to the difficulty of counting it during the exercise. This may be overcome by means of a recording apparatus such as that of Bell and Knox (1938); the R-S waves of the electrocardiogram are recorded on a smoked drum, and the amplifier is modified… CONTINUE READING

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